diff --git a/CMakeLists.txt b/CMakeLists.txt
index 19826d3..bac311d 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -49,6 +49,11 @@ target_compile_definitions(boost_process
         PRIVATE BOOST_PROCESS_SOURCE=1
 )
 
+if(NOT TARGET Boost::filesystem)
+  set(BOOST_PROCESS_USE_STD_FS ON)
+  target_compile_features(boost_process PUBLIC cxx_std_17)
+endif()
+
 if (BOOST_PROCESS_USE_STD_FS)
   target_compile_definitions(boost_process PUBLIC BOOST_PROCESS_USE_STD_FS=1 )
 else()